Sanders says his campaign is “handicapped” because the five states don’t allow independents to take part, but that he plans on fighting through until the very end.

The senator recently said that while he feels the Democratic party hasn’t been completely fair to him, that that’s the way it is and that his campaign is “taking on the establishment.”

The primaries could bring a sweep for Trump — but his Republican rivals are already looking ahead, with a strategy aimed at dividing up some of the anti-Trump vote.

Clinton is already looking past Sanders, barely mentioning him during recent campaign events. Instead, she’s deepening her attacks on Trump, casting the billionaire businessman as out of touch with Americans.